From what I've read/seen, the “Assign to Me” button shows up whenever a task is assigned to a team that includes more than 1 person.

My Forms process tasks are assigned to a team with more than 1 person, AND we have enabled assignment options (i.e. Round robin task distribution) and filters (i.e. assign to user 1 for vendors A-D, user 2 for vendors E-J, etc) to assign to individuals. 

My SMEs would like to see/use the "Assign to Me" button to reassign a task to themselves instead of using the person icon nor the Summary pane 'Reassign' link.  They use this button in other business processes that don't have filters/assignment options enabled and feel this button is easier to navigate with and provides a better user experience.

Is it possible to display the "Assign to Me" button when the task is already assigned to a user?